Has anyone here used an insulated supergaiter for their winter endeavors? I use La Sportiva Makalus and on a few occasions my feet have started to get alittle cold (in extreme cold) even when I am wearing liner socks, VBL’s and Exp wool socks. Wearing any more layers in my boots makes them tight and cuts off circulation. So do they do the trick? One thing that I did do which helped was to put an aftermarket insole in the boot, which defiantly bumped up the insulation. Any thoughts?